always difficult to comment on racks of this size... looks reasonably comprehensive... I like and approve of the dual matrix mixers - I also have 2 and may add more in the future!
things I would add - but only in so much as they make life easier for me - a sinfonion (all the quantization etc needs in 1 place & chord progressions) & a fx aid pro (much easier to work with than the smaller ones)
I'd probably want more utilities too - I can never have too many....
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities